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How to Use SQL Plan Management (SPM) - Plan Stability Worked Example (Doc ID 456518.1)

Last updated on MARCH 31, 2023

Applies to:

Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.


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SQL Plan management (SPM) is a preventative mechanism that records and evaluates the execution plans of SQL statements over time. SPM builds SQL plan baselines composed of a set of existing plans that are known to be efficient. The SQL plan baselines are then used to preserve performance of corresponding SQL statements, regardless of changes occurring in the system, providing "plan stability".

Common usage scenarios where SQL plan management can improve or preserve SQL performance include:

If you have a good plan in the cursor cache, then you can load these into SPM so that you can use this baseline to preserve the performance. The following example command illustrates this:



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